Oil-burning appliance for furnaces



A. HUTTON AND]. M. MAHONEY. OIL BURNING APPLiANCE FOR/FURNACES.

APPLICATION [FILED MAR/29,1920. v 1,360,641. Patented Nov. 30, 1-920.

. 5 SHEETS-SHEET1- INVENTOR5 mu m A. HUTTON AND J. M. MAHONEY.

' OIL BURNING APPLIANCE FOR FURNACES.

APPLICATION HLED MAR. 29, 1920.

Patented Nov. 30, 1920.

51 SHEETSSHEEI 2- INVENTORS M70 A. HUTTON AND J. M. MAHONEY.

OIL BURNING APPLIANCE FOR FURNACES.

APPLICATION FILED MAR. 29, I920.

Patented Nov. 30, 1920.

5 SHEETS-SHEET 3.

mmm

WIITNESSES INVENTORS A. HUTTON AND J. M. MAHONEY.

OIL BURNING APPLIANCE FOR FURNACES. APPLICATION FILED MAR.29, I920.

Patented Nov. 30, 1920.

5 SHEETS-SHEET 5.

- FIIGJZr WI! 1% .41 WW fife / .Illlll L w 9 91b IWIIIIIIII I .WITNESSES:

uNi Eo STATES PATENT OFFICE.

ALFRED HTITTON AND JOHN M. MAHONEY, OFS CHENECTADY NEW YORK.

. OIL-BURNING APPLIANCE FURNACES.

Application filed March 29, 1920. Serial no. 369,627.

- of New York, have jointly invented a certain new and useful Improvement in Oil- Burning Appliances for Furnaces, of which improvement the following is a specification.

Uur invention relates to means for effecting the combustion of hydrocarbon fluids in steam boiler and other heating furnaces, and its object is to simplify and economize the construction, and promote the effective operation, of appliances for this purpose, by the provision of a novel combination of means for heating oil, superheating steam by which it is atomized, and controlling the supply of oil and steam, whereby compact ness and facility of application are materially attained, and theuse of separate heat ing and atomizing lines is avoided.

" The improvement claimed is hereinafter fully set forth. v e

In the accompanying drawings: Figure 1 is a vertical longitudinal central section,

through a locomotive fire-box, illustrating.

an application of our invention; Fig. 2, a horizontal section; Fig. 3, a half rear view of the back head of the fire-box; Fig. 4 a plan view, on a larger scale, of the oil heater; Fig. 5, a plan view of the breaker plate; Fig. 6, a partial transverse section, on a further enlarged scale, through the same; Fig. 6*, a side View; Fig. 7, a transverse section through the heater, on the line a a of Fig. 4; Fig. 8, a View, partly in end elevation, of the same, and part By in transverse section, on the line b b of ig. 9; Fig. 9, a longitudinal section, on the line 0 0 of Fig. 4; Figs. 10 and 11, transverse sections, on the lines 6 b and d cl, respectively,

-of Fig. 9; Fig. 12, a longitudinal central section, through the oil and steam controlling valve; Figs. 13 and 14, side views, in

elevation, taken at an angle of 45 degrees one to the other, of the same; Fig. 15, an end view; Figs. 16 and 17 transverse sec tions, on the lines 6 e and f f, respectively, of Fig. 12; and Figs. 18, 19 and 20, trans verse sections, illustrating different adjustments of the valve, the upper halves of the figures being on the line f f of Fig. 12, and

the lower halves on the line 6 6 thereof.

Our invention is herein exemplified as applied in a locomotive firebox of the pres ent standard medium width type, but, as

Wlll appear upon a consideration of its essentlal structure, and operative features, it

is not limited in application to this, or any other, type of steam boiler furnaces, being adapted for use in connection with heating furnaces of various other descriptions. In the instance herein. shown, the inside fire box, 1, is of the usual form, and is surrounded by water spaces, 3, which are closed at bottom by a mud ring, 4, as in ordinary locomotive practice. The outside firebox, 5, is connected to the waist, 5, of the boiler, throu h which a plurality of fire tubes, 5", extent to the smoke box.

In the practice of our invention, referring descriptively to the specific embodiment thereof which is herein exemplified, the in- 51(16 firebox, 1, is closed at bottom, for the ma]0r portion of its length, by a sheet or plate metalcasing, 6, which corresponds sub.-

. stantially, in general relation to the firebox,

with the ordinary ashpans of steam boiler furnaces in which solid fuel is used, and will be herein termed the bottom pan. This casing issuitably secured to, and supported by the mud ring, 4, and the space between its forward end and the front Water wall of the firebox, is bridged over, and closed by a plate, 7, on which there is set a fire brick floor, 7". The lower portions of the sheets ofthe inside firebox are faced with a fire brick lining, 8, and a similar lining, 8*, may also be fitted in the bottom pan, 6. Air for supporting combustion is admitted to the bottom pan, through a draft passage, 6 in its front,,.which"may be closed by a suitable damper.

An oil Theater, 9,"pi'eferably of cylindrical" 4. As shown in Figs. 7 to 11, inclusive, the

interior of the heater, 9, is divided into a central cylindrical oil chamber, 9 and a surrounding annular steam chamber, 9, the oil chamber having a central partition, 9',

extending over slightly one-half its length, and being open at its end adjacentto one end of, the heater shell. The function of.

the partition, 9 is to effect a returntraverse of the oil admitted to the heater casing, from one end to the middle thereof, before passing to the burner. A lateral oil dc Specificationef Letters Patent. Patented N QQ 1 920 i livery conduit, 9 leads out of the middle of the oil chamber, 9 and an adjoining steam delivery conduit, 9, leads out of the steam chamber, 9*, both the conduits, 9 and 9*, being governed by a single controlling valve which will be presently described.

A steam supply pipe, 10, leading from any convenient location of connection to the steam space of the boiler, and controlled by a valve, 10, within convenient reach of the operator, leads past the bottom pan, 6, to a steam superheater, 11, which, in this in-- stance, is shown as a continuation of the pipe line, 10, in a plurality of return bends, fitted in the fire brick floor, 7. The delivery end of the superheater section, 11, of the pipe line,

10, 'is connected to one end of the steam chamber, 9 of the heater, 9.

The oil which is used as fuel for the firebox, is contained in a suitably located supply tank, (not shown), from which it passes, through an oil supply pipe, 13, controlled by a valve, 13, to the oil chamber, 9 of the heater, within which it traverses throughout the entire length of the chamber, and returns through about half the length thereof, being reversed in direction by the partition, 9.

rounding current of steam in the annular steam chamber, 9*, the steam having been previously superheated in its passage through the superheater section, 11.

The oil delivery conduit, 9 and steam delivery conduit, 9, lead into a valve casing, 12, cast integral with the heater, in which casing there is fitted a manually operable controlling valve, 12, by which both of said passages are governed. The controlling valve, which, in the instance exemplified, is of the plug cock type, is held to. its conically bored seat in the casing, 12 by a spring, 12*, abutting on the larger endof the valve and on the cap, 12 of the valve casing, and is actuated by proper movements of an operating shaft,.14;, j ournaled adjacent to the firebox, and carrying, on its upper end, a lever handle, 146. in arm, ii", on the lower end of'the shaft, 14 is coupled, by a rod, let, to an arm, 14, on one end of a shaft, lif the opposite endof which shaft engages a squared stem, 12, on the smaller end of the controlling valve.

A transverse oil port, 12 of suflicient sectional area to afford full delivery from the oil port, 9 is formed in the controlling valve, said port having a graudating inlet groove, 12, of triangular section, extending through it, and a transverse steam port, 12 of sufficient sectional area to afford full delivery from the steam port, 9, extends through the controlling valve, adjacent to the oil port, 12". The steam port, 12 is disposed atan angle of substantially 45 de grees to the oil'port, 12, and, as most clearly In this traverse of the oil 2 through the heater, it is heated by the sur-- shown in Fig. 16, is outwardly inclined, in opposite directions, from the axial line of the valve, so that the body of the valve surrounding it presents two oppositely located conduit closing members, 12, 12 in the form, in transverse section, of sectors. An oil discharge conduit, 9 and a steam discharge conduit, 9 controlled by the positions of the valve ports, 12""a11d 12 respectively, lead from the valve casing to a burner outlet, or atomizer, 15, the area of opening of which may be varied by an adjustable cap plate, 15, the conduit, 9, communicating with the conduit, 9*, before reaching the atomizer, through a plurality of perforations, 16, in a breaker plate, is, fitting in a lateral extension of the valve casing, and insertible in and from position, through an opening'closed by a removable cap, 16*. The function of the breaker plate .is to divide the oil into a pluraiity of small streams, thereby increasing the surface of the oil, which is exposed to the action of the current of steam, and correspondingly facilitating the atomizing operation.

It will be seen that the construction of the controlling Vii-1V6, as above described, is such mits oil, and is closed after the closure of the latter port, both operations being effected by the movement of a single operating handle. In the ordinary constructions, the'supply of oil and of steam to the atomiaer is controlled by separate and independently operable valves, and, through inadvertence, the oil supply valve may be opened before the steam supply valve, with the result of causing an explosion by the contact of the oil with the hot firebox. The provision of the graduated inlet opening in the oil supply port, enables the supply to be restricted to, as small an amount as desired, and renders it possible to maintain a pilot flame for ignition purposes. The steam which is supplied to, and circulatescontinuously through, the heater, during operation, being previously passed through a superheating section of the supply line, and being consequently dried out and sruoerheatedbcfore entering the heater, a higher degree of heat is imparted to the oil, and the intensity of the flame at the burner is consequently increased.

In prior and existing practice, in oil burning appliances for locomotive boilers, the

oil isusuall conducted from a supply tank, on the tender, to aburner located near the forward end of the firebox, aportion of the oil supply pipe being inclosed in a heating jacket which receivesboiler steam. There is no circulation of steam in the jacket, and no steamoutlet'from it, a deadline being thus formed. There is generally a considerable length of pipe between theheatlocation of th firing valve in the pipe .unc

between the heater and burner, and as near the burner iossible. When the locomotive is pulling into a station, the firing valve is closed, and the oil in the pipe between the valve and burner, seeps out through the in connection with locomotive fireboxes, and

has, for the purpose of illustration, been so exemplified. herein, it may, without variation from its essential. structural and operative features, be used. with heating for naces of other types, whether those of steam boilers or other heat generating structures We claim as our invention and desire to secure by Letters Patent:

1. In a hydrocarbon burning apparatus for furnaces, the combination of an oil heater comprising separated oil and steam chambers; an oil supply conduit, leading into the oil chamber thereof; a steam supply conduit, lcading into the steam chamher; an oil atomizer; an oil delivery conduit and a steam delivery conduit, leading, re spectively, from the oil and the steam chamher to the atomizer; and a controlling valve. interposed between the heater and atomizer and governing the steam and oil deliverv conduits.

2. In a hydrocarbon burning apparatuev for furnaces, the combination of an oil heater, comprising separated oil and steam chambers; an oil supply conduit, leading into the oil chamber thereof; a steam supply conduit, leading into the steam chamber; an oil atomize an oil delivery conduit, and a steam delivery conduit, leading, respectively, from the oil and the steam chamberto the atomizer; and a controlling valve, interposed between. the heater and atomizer, and independently and successively governing the steam and the oil delivery conduits.

In hydrocarbon burning apparatus for furnaces, the combination of an oil heater comprising separated oil and steam chambers; an oil supply conduit leading into the oil chamber thereof; a steam supply conduit leading into the steam chamber; a steam superheater, 1n the line of the steam supplyconduit; an oil atomizer; an oil delivery conduit and a steam delivery conduit, leading, respectively, from the oil andthe steam chamber to the atomizer; and a con trolling valve, interposed between the heater and atomizer and governing the steam and oil delivery conduits.

V 4. In a hydrocarbon burning apparatus for furnaces, the combination of an oil heater, comprising an inner oil chamber and a separated outer steam chamber; an oil sup ply conduit leading into the oil chamber; a steam supply conduit leading into the steam chamber; an oil atomizer; an oil delivery conduit and a steam delivery conduit, leading, respectively, from the oil and the steam chamber to the atomizer; and a controlling valve, interposed between the heater and atomizer and governing the steam and oil ing, respectively, from the oil and the steam chamber to the atomizer; and a controlling valve, interposed between the heater and atomizer and governing the steam and oil delivery condults. Y

6'. In a hydrocarbon burning apparatus, the combination, with a furnace, of an oil heater comprising separated oil and steam chambers; an oil supply conduit, leading into the oil chamber thereof a steam supply conduit, leading into the steam chamber; a steam superheater, in the line of the steam suppl conduit, and located in position to be heate by the furnace; an oil atomizer; conduits for steam and oil from the chambers of the heater to the atomizer; and a oon- 8. In a hydrocarbon burning apparatus for furnaces, an oil heater comprising, in an integral casting, a body or shell having outer supporting flanges, an inner shell, dividing the body into an inner oil chamber and an annular outer steam chamber, a controlling valve casing, communicating, by separate conduits, with the steam and the oil chamber, and a lateral extension projecting from the controlling valve casing and hav ing conduits, extending therefrom to a burner outlet at its end.

9. In a hydrocarbon burning apparatus for furnaces, the combination of a source of steam supply; a source of oil supply; an oil atomizer; conduits, leading from said supply sources to the atomizer; and a controlling valve, having an oilsupply port governing the oil conduit, and a steam supply gowrning port, having its middle plane inclined at an angle to that off the oil supply port, and having oppositely projecting conduit closing members interposed between its ends.

10. in a hydrocarbon burning apparatus for l'urnaces, the combination of a source of steam supply; a source of oil supply; an oil atomizer; conduits, leading from said supply sources to the atomizer; and a controlling valve, havmg an Oll supply port governing the oil conduit and provided with a graduating inlet groove of angular section, and a steam supply governing port, having its middle plane inclined at an angle to that of the oil supply port, and having oppositely projecting conduit closing members interposed between its ends.

11. Ina hydrocarbon burning apparatus for furnaces, the combination of a source of steam supply; a source of oil supply; an oil atomizer; conduits, leading from said supply sources to the atomizer; a controlling valve independently governing said conduits and a perforated breaker plate, establishing constant communication. of the oil conduit and the steam conduit, and interposed between the controlling valve and the atomizer.

ALFRED BUTTON. I JOHN M. MAHONEY.

lVitnesses J. HOWARD TWAGAR, E.-I. SOHAUBER. 

